In thatīs world UP bans at often useless an ineffective so we rarely do so.
What happen if someone create another ID, well they are banned again, some people have been banned multiple times for creating new ID and even if there is no IP match it is usually a matter of time before they get caught.
As for the Pink those at also banned member, those that are banned through the banspam commend only used for spammers (It bans and erase all their post)